4-Channel Arc Flash Detection Relay for MV/HV Switchgear
This arc flash detection relay is a versatile device for bay-based protection. Supporting 4-channel arc signal detection, it configures multiple arc tripping modes for accurate and fast fault isolation.
Technical Specifications
Overview
Advanced Arc Flash Protection
The AFR-4 is a sophisticated 4-channel arc flash detection relay engineered for medium and high voltage switchgear applications. It provides rapid protection with a tripping time of ≤5ms, utilizing dual criteria of arc detection and overcurrent detection to minimize equipment damage. With integrated RS485/Modbus communication, this device offers seamless remote monitoring and control, making it an ideal solution for modern power system safety.
Technical Specifications
- Tripping Time
- 5 ms
- Arc Detection Channels
- 4
- Power Supply Range
- 15-70Vdc
Relay Performance
AC Switching Capacity
10 A
Max Current
277 Vac
Max Voltage
DC Switching Capacity
12 A
Max Current
300 Vdc
Max Voltage
Features & Capabilities
Sensor Compatibility
- ST Visible Light Sensors
- ST Ultraviolet Sensors
- Protection Features
- Arc Flash DetectionOvercurrent DetectionCircuit Breaker Failure ProtectionRegional Arc Light Detection
- Communication
- RS485 Modbus
Relay Configuration
Relay Output Configuration
| Output Function | Type |
|---|---|
| Arc Trip | NO (1 Relay) |
| Arc Trip | NO (4 Relays) |
| Arc Alarm | NO (1 Relay) |
| MT Out | NO (1 Relay) |
| Device Self-Test | NC (1 Relay) |
